WAcción EspañolaWAmerican Medical BureauWFederación Anarquista IbéricaWInternational Red AidWInterprovincial Council of Santander, Palencia and BurgosWJoint Anti-Fascist Refugee CommitteeWJuventudes de Acción PopularWMadrid Defense CouncilWNational Defence Council (Spain)WPopular Executive Committee of ValenciaWRegional Defence Council of AragonWSindicato Español UniversitarioWUnione Sindacale Italiana
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